The Caliber Advantage is yet another iOS gaming pad, but this one has one major advantage: It comes from Zagg, well-known accessory maker and purveyor of some of the finest iPad keyboards known to mankind.

A few weeks ago, I wrote about the iFrogz Boost, a magic box which amplifies the sound from an iPhone or other device just by being close. You put the iPhone on top and the battery-powered iBoost speaker goes to work, making everything louder.

The technology used is called near field audio, or NFA, but nobody would tell me how it works. Luckily, the iFrogz folks sent me one, so I took it apart to see what’s inside.

No wires, no Bluetooth, no nothing. The Boost appears to work by magic

Zagg’s new Boost speaker, sold under the iFrogz brand, appears to amplify music using nothing but magic. Just place your iPhone (or any other device with a speaker) on top and it will boost the sound. No wires, no Bluetooth, no nothing. The music just issues forth from a pair of 2-watt speakers.